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Voltammetry as a Tool for Detection of Metal Sulfide Particles and Nanopareticles

In this work we investigated the possibility of reduction of metal sulfide particles (Ag, Cd, Hg, Pb, Zn and Fe) at the Hg electrode in electrolyte solutions containing µ ; ; M levels of different metals and sulfide. In all investigated solutions metal sulfide particles are formed and subjected to the reduction at the Hg electrode resulting with voltammetric peaks situated between -0.9 and -1.7 V vs. Ag/AgCl, respectively. An electrochemical approach for detection of possible presence of metal sulfide species in anoxic natural samples was proposed.

electrochemistry; metals; anoxia

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